Range hood cleaning control method, control device and range hood

Abstract

The application discloses a range hood cleaning control method, a control device and a range hood, and relates to the technical field of range hoods. The range hood comprises a range hood main body, a smoke collecting assembly and a steam cleaning assembly. The range hood main body is provided with a first flue and a first smoke collecting opening in communication with the first flue. The smoke collecting assembly is movably arranged on the range hood main body and can be moved to open or close the first smoke collecting opening. The steam cleaning assembly is provided with a gas injection part arranged in the first flue, and the gas injection part is provided with a nozzle facing the smoke collecting assembly. The range hood cleaning control method comprises the following steps: under the condition that a working instruction for executing cleaning on the smoke collecting assembly is triggered, the steam cleaning assembly is controlled to evaporate water and then output steam through the nozzle of the gas injection part to clean the smoke collecting assembly; and the smoke collecting assembly is controlled to move when the moving starting time of the smoke collecting assembly is reached. The range hood provided by the application aims to realize self-cleaning of the smoke collecting assembly of the range hood, so as to clean oil stains on the smoke collecting assembly.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a range hood cleaning control method, control device, and range hood. Background Technology

[0002] Range hoods have become an essential appliance in most family kitchens. They effectively remove cooking fumes from the kitchen, maintaining clean air in the kitchen and even the entire indoor environment. Range hoods have a smoke collection component located in the duct to guide smoke; however, over time, grease accumulates on the surface of this component. This grease not only affects the appearance of the range hood but also poses certain safety hazards. Summary of the Invention

[0003] The main purpose of this application is to propose a range hood and its control method, which aims to achieve self-cleaning of the smoke collection components of the range hood to clean the oil stains on the smoke collection components.

[0004] To achieve the above objectives, this application proposes a range hood cleaning control method. The range hood includes a range hood body, a smoke collection component, and a steam cleaning component. The range hood body has a first flue and a first smoke collection port communicating with the first flue. The smoke collection component is movably disposed in the range hood body and can be switched to open or close the first smoke collection port. The steam cleaning component has a jet nozzle disposed in the first flue and the jet nozzle has a nozzle facing the smoke collection component.

[0005] The range hood cleaning control method includes:

[0006] When a working command is triggered to perform cleaning on the smoke collection assembly, the steam cleaning assembly is controlled to evaporate the water and then output steam through the nozzle of the jet unit to clean the smoke collection assembly.

[0007] Determine the activation timing of the smoke collection component and control its operation.

[0008] In one embodiment, determining the activation timing of the smoke collection assembly and controlling the activity of the smoke collection assembly includes:

[0009] Obtain the temperature of the smoke collection assembly;

[0010] When the temperature of the smoke collection component reaches the first preset temperature, the activation timing of the smoke collection component is determined, and the activity of the smoke collection component is controlled.

[0011] In one embodiment, determining the activation timing of the smoke collection assembly and controlling the activity of the smoke collection assembly includes:

[0012] Start timing for heating up;

[0013] Once the target heating time is reached, determine the activation timing of the smoke collection component and control its operation.

[0014] In one embodiment, before starting the heating time, the method further includes:

[0015] Obtain the current initial temperature of the smoke collection assembly;

[0016] Based on the acquired current initial temperature and a preset lookup table, the target heating time corresponding to the acquired current initial temperature is determined.

[0017] In one embodiment, the smoke collection assembly is movably switchable between a first position and a second position within the first flue. In the first position, the smoke collection assembly opens the first smoke collection port, and in the second position, the smoke collection assembly closes the first smoke collection port.

[0018] Determining the activation timing of the smoke collection component and controlling its activity includes:

[0019] Determine the activation timing of the smoke collection component and control the smoke collection component to move and switch between the first and second positions.

[0020] In one embodiment, the smoke collection assembly includes a damper and a back plate. The back plate is movably switchable between a first position and a second position within the first flue. The back plate extends along the first flue. The damper is connected to the back plate. In the first position, the damper opens the first smoke collection port. In the second position, the damper closes the first smoke collection port. The jet nozzle is positioned towards the back plate.

[0021] Determining the activation timing of the smoke collection component and controlling the smoke collection component to move and switch between the first and second positions includes:

[0022] Determine the activation timing of the smoke collection assembly and control the backplate to move and switch between the first and second positions.

[0023] In one embodiment, determining that an activity initiation timing has been reached and controlling the back panel to move and switch between a first position and a second position includes:

[0024] Determine the activation timing of the smoke collection component and control the backplate to move and switch between the first and second positions multiple times.

[0025] In one embodiment, before the steam cleaning assembly evaporates water and outputs steam through the nozzle of the jet unit to clean the smoke collection assembly after the working command for cleaning the smoke collection assembly is triggered, the method further includes:

[0026] Upon receiving the cleaning start command and confirming that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered.

[0027] The process of determining the activation timing of the smoke collection assembly and controlling the backplate to move and switch between the first and second positions multiple times includes:

[0028] The activation timing of the smoke collection assembly is determined, and the back plate is controlled to move and switch between a first position and a second position multiple times. During the process of the back plate moving and switching from the second position to the first position for the first time after the current activation timing is reached, there are at least two movement phases, and the movement speed of the back plate in one movement phase is lower than the movement speed in the other movement phase.

[0029] In one embodiment, before the steam cleaning assembly evaporates water and outputs steam through the nozzle of the jet unit to clean the smoke collection assembly after the working command for cleaning the smoke collection assembly is triggered, the method further includes:

[0030] Upon receiving the cleaning start command and confirming that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered.

[0031] The process of determining the activation timing of the smoke collection assembly and controlling the backplate to move and switch between the first and second positions multiple times includes:

[0032] The activation timing of the smoke collection assembly is determined, and the back plate is controlled to move and switch between the first and second positions multiple times. During the process of the back plate first moving from the second position to the first position after the current activation timing is reached, the back plate is controlled to move in a variable speed manner with a decreasing movement speed.

[0033] In one embodiment, before the steam cleaning assembly evaporates water and outputs steam through the jet unit to clean the smoke collection assembly after the steam cleaning assembly is activated by the operating command, the following steps are included:

[0034] Upon receiving a cleaning start command, determine the location of the smoke collection assembly;

[0035] When the position of the smoke collection assembly is determined to be closed at the first smoke collection port, the operation command of the steam cleaning assembly is triggered.

[0036] This application also provides a control device configured to implement the range hood cleaning control method described above.

[0037] This application also provides a range hood, which includes the control device as described above.

[0038] The range hood cleaning control method provided in this application enables self-cleaning of the range hood's smoke collection components to remove grease. The method includes, upon triggering a cleaning command for the smoke collection components, controlling the steam cleaning component to evaporate water and then outputting steam through the nozzle of the jet unit to clean the smoke collection components; determining the activation timing of the smoke collection components and controlling their movement. This allows the smoke collection components to be heated before cleaning begins, ensuring they are at a suitable temperature to prevent incomplete cleaning due to excessive grease adhesion at low temperatures; and ensuring that the component's movement trajectory dynamically coordinates with the continuously jetting steam, acting like a steam brush to scrub and peel away surface grease, thus achieving self-cleaning of the range hood's smoke collection components. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 A flowchart of the first embodiment of the range hood cleaning control method provided in this application;

[0041] Figure 2 A flowchart of the second embodiment of the range hood cleaning control method provided in this application;

[0042] Figure 3 A flowchart of the third embodiment of the range hood cleaning control method provided in this application;

[0043] Figure 4 A flowchart of the fourth embodiment of the range hood cleaning control method provided in this application;

[0044] Figure 5 A flowchart of the fifth embodiment of the range hood cleaning control method provided in this application;

[0045] Figure 6 This is a structural diagram of the first embodiment of the range hood provided in this application;

[0046] Figure 7 This is an exploded structural diagram of the first embodiment of the range hood provided in this application;

[0047] Figure 8This is a structural diagram of the second embodiment of the range hood provided in this application;

[0048] Figure 9 for Figure 8 Cross-sectional three-dimensional structural diagram of AA;

[0049] Figure 10 A structural diagram of the third embodiment of the range hood provided in this application;

[0050] Figure 11 A structural diagram of the fourth embodiment of the range hood provided in this application;

[0051] Figure 12 This is a structural diagram of the first embodiment of the steam cleaning assembly provided in this application.

[0052] Explanation of icon numbers:

[0053] 10. Range hood;

[0054] 111. First smoke collection port; 112. Second smoke collection port; 120. Top smoke collection hood; 130. Panel; 140. Side smoke collection hood; 150. Fan;

[0055] 200. Smoke collection assembly; 210. Air damper; 211. Door body; 212. Water collection plate; 220. Back plate; 230. Drive assembly; 231. Slide rail; 232. Slider; 233. Drive rod;

[0056] 300. Steam cleaning assembly; 311. Nozzle; 320. Baffle plate; 340. Steam generator; 350. Water storage device.

[0057] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0060] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0061] It should be noted that step designations such as S100 and S200 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S200 first and then S100, etc., but these should all be within the protection scope of this application.

[0062] During the operation of a range hood, the smoke collection component located in the flue guides and concentrates cooking fumes. However, due to prolonged contact with high-temperature fumes, the grease components gradually cool and condense on the surface of the collection component, forming grease buildup. This accumulated grease not only affects the appearance of the range hood, reducing its overall aesthetic appeal, but can also pose a fire hazard, especially in scenarios involving high-heat cooking or in environments with large fires, where the heated grease may ignite and threaten family safety.

[0063] Therefore, in order to solve the above problems, this application proposes a range hood cleaning control method. In one embodiment, as follows: Figure 6 and Figure 7 As shown, the range hood 10 includes a main body, a smoke collection assembly 200, and a steam cleaning assembly 300. The steam cleaning assembly 300 is capable of self-cleaning the smoke collection assembly 200 to remove at least some of the grease on the smoke collection assembly 200.

[0064] In this embodiment, the main body of the range hood has a first flue and a first smoke collection port 111 connected to the first flue. It is understood that the main body of the range hood is the main structure of the range hood 10, which may include a smoke collection hood and a fan 150. The fan 150 and the smoke collection hood are connected. The first flue may be a flue located within the smoke collection hood, which has two opposing connected openings. One opening connects to the fan 150, and the other opening serves as the first smoke collection port 111. The first smoke collection port 111 is used to receive fumes rising from the cooking area. When the fan 150 is started, a negative pressure airflow is formed within the first flue, guiding the fumes into the first smoke collection port 111 and discharging them outwards along the flue, thereby achieving the basic smoke extraction function. The shape of the first flue can be rectangular, trapezoidal, or serpentine, etc., to optimize airflow efficiency; the specific selection is not limited here. Optionally, the main body of the range hood may also include an outer casing for the fan 150. This outer casing serves as the mounting cavity and airflow guiding structure for the fan 150, encapsulating and protecting the fan 150, and also forming a flue gas exhaust channel. The fan 150 is housed within this outer casing, and its installation position corresponds to its position within the first flue, without specific limitations. The outer casing may also have smoke inlets and exhaust outlets located on opposite sides: the smoke inlets are located at the front or side of the outer casing, communicating with the air hood or the first flue, serving as the inlet for oil fumes to enter the fan 150; the exhaust outlets are located at the rear of the outer casing, venting the treated flue gas outdoors.

[0065] It is understandable that the wind turbine 150 in the attached drawing is the outer shell of the wind turbine body, that is, the wind turbine body of the wind turbine 150 is not shown in the attached drawing, and what is shown in the attached drawing is the outer shell including the wind turbine body.

[0066] In this embodiment, the smoke collection assembly 200 is movably disposed on the main body of the smoke hood and can be switched to open or close the first smoke collection port 111. Optionally, the movement of the smoke collection assembly 200 can be one or more of the following: moving, rotating, swinging, etc. Of course, the mode of movement of the smoke collection assembly 200 is not limited here, as long as it can open or close the first smoke collection port 111 through movement. Figure 6 As shown, this is the case when the first smoke collection port 111 is closed, as follows: Figure 10 or Figure 11The diagram shows the first smoke collection port 111 open. The smoke collection assembly 200 can switch between two operating states by moving. The first operating state is the closed state, where the smoke collection assembly 200 moves to partially or completely cover the first smoke collection port 111, achieving a seal or near-seal, effectively closing the first smoke collection port 111 and disconnecting the first air duct within the range hood body at the inlet end. The second operating state is the open state, where the smoke collection assembly 200 moves away from the first smoke collection port 111, fully exposing it to form an open smoke inlet for drawing in cooking fumes. It can be understood that, exemplarily, when smoke exhaust is needed, the smoke collection assembly 200 moves downwards, creating a sufficient air intake gap with the range hood body, opening the first smoke collection port 111 for fume extraction; while in the non-operating state, the smoke collection assembly 200 moves upwards to reset, closing the first smoke collection port 111 again, maintaining a neat and aesthetically pleasing appearance.

[0067] It is important to note that the smoke collection assembly 200 not only functions to open and close the first smoke collection port 111, but also guides smoke into the flue. In one feasible embodiment, the structure of the smoke collection assembly 200 may include a back plate 220, which can be designed as an inclined plate, a straight plate, or a bent plate, etc., to optimize airflow direction and reduce turbulence and resistance through specific tilt angles or curved shapes, thereby improving smoke extraction efficiency. However, this also raises a problem: the smoke collection assembly 200 is directly exposed to the high temperature and high humidity of the smoke environment during use, and its surface, especially the back plate 220 used for smoke guidance, is prone to oil accumulation. This oil not only affects the cleanliness and aesthetics of the range hood 10, but may also breed bacteria, produce odors, and even pose certain safety hazards.

[0068] In this embodiment, as Figure 7 As shown, the steam cleaning assembly 300 has a jetting section disposed within a first flue, the jetting section having a nozzle 311 facing the smoke collection assembly 200; the steam cleaning assembly 300 is used to output steam through the nozzle 311 of the jetting section during operation to clean the smoke collection assembly 200. Optionally, the steam cleaning assembly 300 includes a steam generating device 340 and a jetting section communicating therewith, wherein the steam generating device 340 is used to heat water into high-temperature and high-pressure steam, and deliver it through a pipeline to the jetting section disposed within the first flue, the jetting section having a nozzle 311 facing the smoke collection assembly 200.

[0069] In one embodiment, such as Figure 1 As shown, the range hood cleaning control method includes steps S100 and S200.

[0070] In this embodiment, in step S100, when a working command is triggered to perform cleaning on the smoke collection assembly, the steam cleaning assembly is controlled to evaporate the water and then output steam through the nozzle of the jet unit to clean the smoke collection assembly.

[0071] The cleaning command for the smoke collection component 200 can be a manual cleaning request initiated by the user through the operation panel 130 or control terminal, or it can be a cleaning signal automatically triggered by the range hood 10 based on preset conditions. For example, the range hood 10 can have a built-in cumulative runtime counter, which automatically starts the cleaning process when the cumulative runtime exceeds a certain duration; or it can have a built-in oil stain sensor, humidity detection module, and / or temperature detection module, which automatically starts the cleaning process when the amount of oil stains exceeds the standard or the smoke extraction efficiency decreases significantly. Of course, the specific way the cleaning command for the smoke collection component 200 is triggered is not limited here.

[0072] After the steam cleaning component 300 evaporates water, steam is output through the nozzle 311 of the jet unit to clean the smoke collection component 200. This process utilizes the steam to perform thermal shock and thermal dissolution on the surface of the smoke collection component 200. When the steam comes into contact with the low-temperature oil stains, it rapidly releases latent heat, causing the solidified grease to soften or even liquefy. At the same time, the high-speed jet of steam generates a certain scouring force, causing the oil stains to peel off from the surface of the smoke collection component 200 and flow away with the condensate.

[0073] In this embodiment, step S200 involves determining the activation timing of the smoke collection component and controlling its activity.

[0074] Understandably, when the activation timing of the smoke collection assembly 200 is determined, it indicates that the smoke collection assembly 200 is ready to move to change its position, such as opening or closing the first smoke collection port 111. This activation timing can be determined based on various conditions. For example, in step S100, once steam is output to the smoke collection assembly 200 and it reaches the target temperature, the activation timing is determined to have been reached. Alternatively, the activation timing is determined to have been reached when the steam flow rate output from the steam cleaning assembly 300 reaches the target flow rate. This ensures that the temperature of the smoke collection assembly 200 does not drop too low, allowing the steam to fully dissolve the oil stains on its surface during subsequent operations. Furthermore, the disturbance effect generated by mechanical movement further promotes oil stain removal, preventing the overall temperature of the smoke collection assembly 200 from being too low, which would result in low cleaning efficiency. It is understandable that when the smoke collection component 200 is in a warm state, the solidified grease adhering to its surface will soften or even partially liquefy due to the heat, significantly reducing its adhesion. At this time, if the smoke collection component 200 starts to move, relative movement will occur between its surface and the steam flow output from the jet nozzle, forming a dynamic scouring effect to improve cleaning efficiency. In other words, after triggering the working command to perform cleaning on the smoke collection component 200, the range hood 10 will not immediately drive the smoke collection component 200 to move, but will first enter a preheating or pre-spraying stage. Only after reaching the activation timing will the smoke collection component 200 be controlled to move.

[0075] Optionally, controlling the movement of the smoke collection component 200 can involve controlling it to translate, rotate, swing, lift, slide, or any combination of the above movements (such as a composite movement of translation and rotation). The specific movement method can be designed according to the structural layout of the range hood and is not limited here.

[0076] Optionally, before executing step S100, it can be ensured that the smoke collection assembly 200 is in the closed position of the first smoke collection port 111. For example, before executing step S100, the position of the smoke collection assembly 200 can be detected. If it is detected that the smoke collection assembly 200 is currently in the open state, that is, the first smoke collection port 111 is open, then the smoke collection assembly 200 is controlled to perform an activity switch to close the first smoke collection port 111, and then proceed to step S100. If the smoke collection assembly 200 is already in the closed state, no additional operation is required, and step S100 can be directly entered. It is understood that the main purpose of this precondition is to create a relatively closed heating space. The closed environment helps to increase the temperature and humidity inside the flue, enhance the pyrolysis and softening effect on the oil stains, and can reach the activity start-up time more quickly, thereby saving a certain amount of steam and improving cleaning efficiency.

[0077] It is understandable that this method is equivalent to reusing the original mechanism of the first smoke collection port 111 of the smoke collection assembly 200. When the first smoke collection port 111 is switched on and off, the smoke collection assembly 200 can be controlled to move, so as to control the movement or segmented positioning of the smoke collection assembly 200 during the cleaning process.

[0078] In summary, the range hood cleaning control method provided in this application can achieve self-cleaning of the smoke collection component 200 of the range hood 10 to clean the grease on the smoke collection component 200. The method includes, upon triggering a working command to perform cleaning on the smoke collection component 200, controlling the steam cleaning component 300 to evaporate water and then outputting steam through the nozzle 311 of the jet unit to clean the smoke collection component 200; determining the activation timing of the smoke collection component 200 and controlling its operation. In this way, when entering the cleaning process, the smoke collection component 200 is not controlled to move initially. Instead, it is heated until the activation timing is reached before controlling its movement. This ensures that the smoke collection component 200 is at a suitable temperature, preventing excessive grease adhesion at low temperatures that could lead to incomplete cleaning. Furthermore, during the component's movement, its trajectory dynamically coordinates with the continuously jetting steam, acting like a steam brush to scrub and peel off surface grease. Thus, self-cleaning of the smoke collection component 200 of the range hood 10 is achieved.

[0079] In one embodiment, such as Figure 2 As shown, step S200 may include steps S211 and S212.

[0080] In this embodiment, step S211 is to obtain the temperature of the smoke collection component.

[0081] In this embodiment, step S212 involves determining the activation timing of the smoke collection component when its temperature reaches a first preset temperature, and controlling the activity of the smoke collection component.

[0082] The first preset temperature can be above 60℃, such as 65℃, 70℃, or 80℃. This first preset temperature can be higher than the melting point of common cooking oils. Most animal and vegetable oils have a melting point between 40℃ and 60℃. Thus, a first preset temperature greater than 60℃ is sufficient to soften or partially liquefy the solidified oil. Of course, the first preset temperature can also be set to other values ​​based on factors such as the heat resistance of the material used in the smoke collection component 200, the intensity of steam cleaning, or the ambient temperature and humidity. Specific settings are not limited here.

[0083] Optionally, a temperature sensor, such as an NTC thermistor or a thin-film thermocouple, can be directly mounted on the smoke collection assembly 200 to detect the body temperature of the smoke collection assembly 200. Alternatively, a non-contact temperature measurement method can be used, such as installing an infrared temperature sensor inside the first flue or near the jet nozzle to indirectly obtain the surface temperature data of the smoke collection assembly 200 through the principle of thermal radiation. Of course, the specific method of obtaining the temperature of the smoke collection assembly 200 is not limited here and can be determined according to the actual scenario and requirements.

[0084] In one feasible embodiment, when the steam cleaning component 300 is activated and outputs steam, the control device inside the range hood 10 can first obtain the current temperature of the smoke collection component 200 and continuously monitor its heating process. When the temperature reaches a first preset temperature, it triggers an activity control command for the smoke collection component 200. This ensures that the smoke collection component 200 only begins to move when it has sufficient heat energy, avoiding poor cleaning performance and steam waste caused by movement at low temperatures. More importantly, at high temperatures, the grease on the surface of the smoke collection component 200 is softened or even fluid. Combined with its own movement and the continuously ejected steam flow, this creates a cleaning effect similar to a steam brush, improving cleaning efficiency and cleanliness.

[0085] It is important to note that before outputting steam, the first smoke collection port 111 should be sealed. The sealed environment helps to quickly raise the temperature of the smoke collection component 200 to the first preset temperature, thereby reducing steam output, improving cleaning efficiency, and saving steam consumption.

[0086] In one embodiment, such as Figure 3 As shown, step S200 may include steps S221 and S222.

[0087] In this embodiment, step S221 is to start the heating timer.

[0088] In this embodiment, step S222 involves determining the activation timing of the smoke collection component when the heating time reaches the target heating duration, and controlling the activity of the smoke collection component.

[0089] The target heating time can be a preset fixed time value, such as 30 seconds, 45 seconds, or 60 seconds. This target heating time can also be a dynamic parameter determined through experiments or simulations. Optionally, during the testing phase, the time required for the surface oil of the smoke collection assembly 200 to reach the effective degreasing temperature can be measured. For example, if the effective degreasing temperature of the smoke collection assembly 200 is 60℃, then the target heating time is the time required for the smoke collection assembly 200 to reach 60℃ under the action of the steam cleaning assembly 300. A heating time is then calibrated as its target heating time. In subsequent actual cleaning processes, this calibrated target heating time can be directly used as a judgment basis, reliably determining whether the activation timing of the smoke collection assembly 200 has been reached without real-time temperature measurement, thereby triggering its movement to cooperate with the steam for efficient self-cleaning. This eliminates the need for a temperature acquisition module, such as an NTC thermistor, on the smoke collection assembly 200, reducing costs and simplifying the structural design. Of course, during the testing phase, the first smoke collection port 111 can be closed. In the subsequent cleaning phase, it can also be ensured that the first smoke collection port 111 is closed before the cleaning is started. This can prevent steam and heat loss, reduce heating time, and reduce steam waste.

[0090] In one feasible implementation, the control device can trigger a heating timer after the steam cleaning assembly 300 is started and steam output is confirmed. When the timer reaches the target heating duration, the control device determines that the smoke collection assembly 200 has been sufficiently heated, and then drives the motor or actuator to move the smoke collection assembly 200. This time-based indirect temperature control strategy, although it does not directly measure the temperature, can achieve reliable cleaning control at a lower cost, provided that the steam output is stable.

[0091] In one embodiment, such as Figure 4 As shown, before step S221, steps S231 and S232 are also included.

[0092] In this embodiment, step S231 involves obtaining the current initial temperature of the smoke collection assembly.

[0093] In this embodiment, step S232 involves determining the target heating time corresponding to the acquired current initial temperature based on the acquired current initial temperature and a preset lookup table.

[0094] The preset reference table can be a data mapping table established in advance through experiments. During the product development phase, the time required for the smoke collection assembly 200 to rise from various initial temperatures to the effective degreasing temperature (e.g., above 60°C) is systematically tested, and this data is organized and stored in the storage unit of the control device. This preset reference table establishes a correlation between the initial temperature of the smoke collection assembly 200 and the corresponding target heating time, providing a basis for dynamic timing during the subsequent cleaning process.

[0095] The current initial temperature refers to the actual temperature state of the smoke collection component 200 after the cleaning command is triggered, before the steam cleaning component 300 has started heating. This current initial temperature reflects the current thermal starting point of the equipment and is affected by various factors, such as the ambient temperature of the kitchen, the residual heat from the last use of the range hood 10, and the length of time the machine has been off-duty.

[0096] Optionally, a temperature sensor, such as an NTC thermistor or a thin-film thermocouple, can be directly mounted on the smoke collection assembly 200 to detect its current initial temperature. Alternatively, a non-contact temperature measurement method can be used, such as installing an infrared temperature sensor inside the first flue or near the jet nozzle to indirectly obtain the current initial temperature of the surface of the smoke collection assembly 200 through the principle of thermal radiation. Of course, the specific method for obtaining the current initial temperature of the smoke collection assembly 200 is not limited here and can be determined according to the actual scenario and requirements.

[0097] In one feasible implementation, after receiving a cleaning command, the control device first reads the current initial temperature collected by the temperature sensor, then queries a preset lookup table based on the value to match the corresponding target heating time; then, after confirming that the steam has been output stably, the timer is started, and when the timer reaches the target time, it is determined that the smoke collection component 200 has been sufficiently heated, thereby triggering its activity.

[0098] In one embodiment, step S200 may further include step S240, which involves determining the activation timing of the smoke collection component and controlling the smoke collection component to move and switch between a first position and a second position.

[0099] In this embodiment, the smoke collection assembly 200 is movably switchable between a first position and a second position within the first flue. In the first position, the smoke collection assembly 200 opens the first smoke collection port 111; in the second position, the smoke collection assembly 200 closes the first smoke collection port 111. Compared to other modes of movement such as rotation or oscillation, the linear translation method offers higher motion stability and guiding accuracy, ensuring the stability and controllability of the smoke collection assembly 200 during opening and closing, and reducing vibration and abnormal noise. Moreover, linear motion facilitates coordination with the steam cleaning assembly 300, enabling reciprocating motion during cleaning and increasing the cleaning coverage area.

[0100] In steam cleaning mode, the control device can drive the drive component 230 to slowly circulate the smoke collection component 200, or move it in segments, so that the smoke collection component 200 repeatedly passes over the position corresponding to the nozzle 311 of the jet section, thereby expanding the steam coverage area and ensuring that the high-temperature steam can fully act on the entire surface of the smoke collection component 200, improving the self-cleaning effect. Of course, the movement method of the smoke collection component 200 can be determined according to the actual application, and its movement speed, movement distance, and number of back-and-forth cycles are not limited here.

[0101] In one embodiment, step S240 can also be implemented by step S241, which involves determining the activation timing of the smoke collection assembly and controlling the backplate to move and switch between the first and second positions.

[0102] In this embodiment, as Figure 7 , Figure 10 and Figure 11 As shown, the smoke collection assembly 200 includes a damper 210, a back plate 220, and a drive assembly 230. The back plate 220 is movably switchable between a first position and a second position within a first flue. The back plate 220 extends along the first flue, and the damper 210 is connected to the back plate 220. The drive assembly 230 is drivenly connected to at least one of the damper 210 and the back plate 220. The drive assembly 230 is used to drive at least one of the damper 210 and the back plate 220 to move and switch the back plate 220 between the first position and the second position. When the back plate 220 is in the first position, the damper 210 opens the first smoke collection port 111. When the back plate 220 is in the second position, the damper 210 closes the first smoke collection port 111. The nozzle 311 of the jet unit is positioned facing the back plate 220.

[0103] It should be noted that the back plate 220 is located within the first air duct and can move up and down along the guide rail or slide groove inside the air duct. During its up and down movement, the back plate 220 always maintains an orientation that matches the smoke inlet direction of the main body of the range hood to guide the smoke. This design allows the back plate 220 to function as a moving part for opening and closing while continuously guiding the smoke. The damper 210 can be square, round, polygonal, or other structures, and is not limited here, as long as it can close the first smoke collection port 111. The shape of the damper 210 can also be based on the shape of the first smoke collection port 111. Optionally, such as... Figure 9As shown, the damper 210 and the back plate 220 are set at an angle, forming an L-shape. When the smoke collection assembly 200 is in the second position (closed state), the damper 210 horizontally or nearly horizontally covers the first smoke collection port 111; while the back plate 220 can extend downward at an angle to form a smoke guiding surface. When the smoke collection assembly 200 descends to the first position, the damper 210 disengages from the smoke collection port, and the back plate 220 unfolds accordingly, forming an open smoke collection space together with the front edge of the smoke hood body.

[0104] In this embodiment, since the back panel 220 is responsible for guiding smoke, its surface is directly exposed to the high-temperature, high-humidity, and grease-rich airflow, which easily leads to oil stains. After long-term use of the range hood 10, the oil stains will cool and solidify on the surface of the back panel 220. Therefore, in this application, step S241 uses the back panel 220 as the object of steam cleaning, that is, the nozzle 311 of the jet sprays air towards the back panel 220, and controls the reciprocating movement of the back panel 220 between the first position and the second position during the cleaning process, so that it is softened by heat and subjected to dynamic rinsing, thereby achieving targeted cleaning.

[0105] In step S241, the back plate 220 is controlled to move and switch between the first and second positions. This can be achieved by controlling the drive assembly 230 to drive the back plate 220 to move and switch between the first and second positions. Optionally, the damper 210 and the back plate 220 can be fixedly connected by screws, clips, or welding to form a single movable smoke collection assembly 200, which can then move synchronously up and down under the action of the drive assembly 230. The drive assembly 230 can be directly driven to the back plate 220, for example, by a motor driving a lead screw nut or linkage mechanism to be fixedly connected to the back or side of the back plate 220, thereby directly pushing the back plate 220 to reciprocate between the first and second positions. The drive assembly 230 can also be driven to the damper 210, driving the damper 210 to move up and down to synchronously move the connected back plate 220. Furthermore, the drive assembly 230 can be connected to both the damper 210 and the back plate 220 simultaneously, for example, by using a double guide rail 231 or a multi-point transmission structure to ensure balanced force on both during movement. It should be noted that the specific configuration of the drive component 230 is not limited here. The key point is that it can drive the smoke collection component 200 to open and close the first smoke collection port 111 under the control of the control device, and can control the back plate 220 to move and switch between the first position and the second position.

[0106] Of course, the movement can be a translation or a swing, etc., and there is no limitation here.

[0107] Optionally, such as Figure 9 and Figure 11As shown, the drive assembly 230 includes a drive rod 233, a slide rail 231, and a slider 232. One of the slide rail 231 and the slider 232 is located on the main body of the range hood, and the other is located on the back plate 220. The slide rail 231 and the slider 232 are used to drive the back plate 220 to move along a preset path when they slide relative to each other. The drive rod 233 has a first end and a second end. The first end of the drive rod 233 is connected to the main body of the range hood, and the second end of the drive rod 233 is connected to the damper 210. The drive rod 233 is used to drive the damper 210, and through the damper 210, it drives the back plate 220 to move along the preset path. The first position and the second position are located on the preset path.

[0108] In one embodiment, step S241 can also be implemented by step S300, which involves determining the activation timing of the smoke collection assembly 200 and controlling the back plate 220 to move and switch between the first position and the second position multiple times.

[0109] The multiple movement switching is designed to enhance the cleaning effect through reciprocating motion. For example, after entering the self-cleaning mode, the control device can control the back panel 220 to repeatedly move back and forth between the first position and the second position within a preset cleaning time period, such as 10 minutes, 12 minutes, or 15 minutes. During each movement, high-temperature steam is continuously sprayed onto the surface of the back panel 220, and the reciprocating motion of the back panel 220 continuously changes its relative angle and contact area with the steam flow, forming a dynamic scouring effect that effectively cleans the oil stains on the back panel 220.

[0110] In one embodiment, before step S100, the method further includes step S400. Step S400: Upon receiving a cleaning start command and determining that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered.

[0111] Based on step S400, step S300 can be implemented by step S310. Step S310 involves determining the activation timing of the smoke collection component, controlling the back plate to move and switch between the first and second positions multiple times, and during the process of the back plate moving and switching from the second position to the first position for the first time after the current activation timing is reached, there are at least two movement phases, and the movement speed of the back plate in one movement phase is lower than the movement speed in the other movement phase.

[0112] Optionally, the control device will only allow the triggering of the cleaning command for the smoke collection assembly 200 when it confirms that the back plate 220 is in the second position. This is because step S100 is essentially a preheating process, during which the steam cleaning assembly 300 sprays steam onto the back plate 220 to soften the surface grease. If the first smoke collection port 111 is open, a large amount of heat and steam will quickly dissipate to the external environment through the first smoke collection port 111, which will lead to reduced thermal efficiency and may also prolong the preheating time, increase energy consumption, and waste steam. When the first smoke collection port 111 is closed, the first flue forms a relatively sealed cavity, which helps steam to circulate and accumulate inside, allowing the back plate 220 to heat up faster and more evenly, thereby improving cleaning efficiency.

[0113] In step S100, after the steam cleaning component 300 evaporates water, steam is output through the nozzle 311 of the jet unit to clean the smoke collection component 200. Specifically, this means outputting steam to the back plate 220 to clean it. The nozzle 311 of the jet unit is usually fixed towards a local area of ​​the back plate 220. During the preheating process, the area near the nozzle 311 is heated sufficiently and therefore has a higher temperature, while the area away from the nozzle 311 heats up more slowly, resulting in a large overall temperature gradient of the back plate 220. If the system is opened directly at a constant speed at this time, the oil stains in the low-temperature area may not have softened sufficiently, reducing the cleaning effect. Therefore, during the initial movement from the second position to the first position, the control device divides the stroke into at least two consecutive movement stages, which can be a first movement stage and a second movement stage, respectively. The first movement stage operates at a higher first speed, while the second movement stage operates at a lower second speed, extending the time for the steam to act on the low-temperature area, thereby improving the overall cleaning uniformity. Of course, the entire initial start-up stroke can also be subdivided into multiple sequential motion stages, with a deceleration action set between any two adjacent stages, meaning the speed of the later stage is lower than the previous stage. Optionally, multiple temperature sensors can be arranged on the backplate 220 along its moving direction, for example, temperature measuring points can be set at the top, middle, and bottom to collect the actual temperature of each part. The control system can dynamically adjust the moving speed of each motion stage based on these distributed temperature data. The lower the temperature area, the slower the moving speed of the corresponding stage, ensuring that the steam has enough time to complete pyrolysis and rinsing, thereby realizing adaptive variable speed cleaning control based on temperature feedback, thus improving cleaning efficiency.

[0114] It should be noted that the aforementioned deceleration control strategy is only applied to the initial movement from the second position to the first position. This is because after completing this speed change stroke, the backplate 220 has achieved a relatively uniform temperature distribution due to the combined effect of continuous steam injection and its own movement. Therefore, in subsequent reciprocating movement transitions, uniform speed movement can be used, or a speed-changing strategy can be continued as needed; the specific method is not limited here.

[0115] In one embodiment, the method further includes step S400 before step S100. Step S400: Upon receiving a cleaning start command and determining that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered.

[0116] Based on step S400, step S300 can be implemented through step S320. Step S320 involves determining the activation timing of the smoke collection component, controlling the backplate to move and switch between the first and second positions multiple times, and controlling the backplate to move from the second position to the first position for the first time after the current activation timing is reached, while controlling the backplate to move in a variable speed manner with a decreasing movement speed.

[0117] Optionally, the control device will only allow the triggering of the cleaning command for the smoke collection assembly 200 when it confirms that the back panel 220 is in the second position. This is because step S100 is essentially a preheating process, during which the steam cleaning assembly 300 sprays steam onto the back panel 220 to soften the surface grease. If the first smoke collection port 111 is open, a large amount of heat and steam will quickly dissipate to the external environment through the first smoke collection port 111, which will lead to reduced thermal efficiency and may also prolong the preheating time, increase energy consumption, and waste steam. When the first smoke collection port 111 is closed, the first flue forms a relatively sealed cavity, which helps steam to circulate and accumulate inside, allowing the back panel 220 to heat up faster and more evenly, thereby improving cleaning efficiency.

[0118] In step S100, after the steam cleaning component 300 evaporates water, steam is output through the nozzle 311 of the jet unit to clean the smoke collection component 200. Specifically, this means outputting steam to the back plate 220 to clean it. The nozzle 311 of the jet unit is usually fixed towards a specific area of ​​the back plate 220. During preheating, the area near the nozzle 311 is heated sufficiently and therefore has a higher temperature, while the area farther from the nozzle 311 heats up more slowly, resulting in a large overall temperature gradient for the back plate 220. If it is opened directly at a constant speed at this point, the oil stains in the low-temperature area may not have softened sufficiently, reducing the cleaning effect. Therefore, during the initial movement from the second position to the first position, the system controls the back plate 220 to operate in a variable speed mode with continuously decreasing speed. That is, from the initial moment, the back plate 220 starts at a relatively fast speed, and then continuously or intermittently reduces its speed throughout the entire stroke until it reaches its lowest speed near the first position. This ensures a more uniform temperature across the entire back plate 220.

[0119] It should be noted that the aforementioned deceleration control strategy is only applied to the initial movement from the second position to the first position. This is because after completing this speed change stroke, the backplate 220 has achieved a relatively uniform temperature distribution due to the combined effect of continuous steam injection and its own movement. Therefore, in subsequent reciprocating movement transitions, uniform speed movement can be used, or a speed-changing strategy can be continued as needed; the specific method is not limited here.

[0120] In one embodiment, such as Figure 5 As shown, before step S100, steps S510 and S520 are also included.

[0121] In this embodiment, step S510 involves determining the position of the smoke collection assembly upon receiving a cleaning start command.

[0122] In this embodiment, step S520 involves triggering a working command for the steam cleaning component when the position of the smoke collection assembly is determined to be closed at the first smoke collection port.

[0123] Determining the position of the smoke collection assembly 200 can be achieved through various technical means. For example, the encoder of the drive motor can provide feedback on the motor's rotation angle or stroke, and combined with the kinematic relationship of the transmission mechanism, the current position of the smoke collection assembly 200 can be calculated. Alternatively, limit switches or Hall effect sensors can be installed along the movement path of the smoke collection assembly 200, and whether it is in the second position can be determined by detecting whether a closed signal is triggered. Position potentiometers, optical encoders, or magnetostrictive displacement sensors can also be used to directly measure the physical displacement of the smoke collection assembly 200. Of course, the specific method for detecting the position of the smoke collection assembly 200 is not limited here.

[0124] The steam cleaning assembly 300 is only activated when the smoke collection assembly 200 is positioned with the first smoke collection port 111 closed. On one hand, the closed first smoke collection port 111 creates a relatively sealed cavity in the first flue, effectively preventing high-temperature steam from escaping from the air inlet during the preheating stage, thereby improving heat utilization efficiency and accelerating the heating rate of the back panel 220. On the other hand, it prevents steam leakage to the stove area, ensuring user safety and a clean kitchen environment.

[0125] This application also provides a control device configured to implement the range hood cleaning control method described above. It should be noted that specific embodiments of this range hood cleaning control method are described above. Since this control device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0126] The control device may include, but is not limited to, hardware platforms with logic computing and instruction execution capabilities such as microcontrollers (MCUs), microprocessors (MPUs), digital signal processors (DSPs), application-specific integrated circuits (ASICs), or field-programmable gate arrays (FPGAs). It stores program code internally and executes the program code to implement the steps of the above-mentioned range hood cleaning control method.

[0127] This application also provides a range hood 10, which includes the control device as described above. It should be noted that specific embodiments of this control device are described above. Since this range hood 10 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above embodiments.

[0128] In one embodiment, the range hood 10 includes a range hood body, a smoke collection component 200, and a steam cleaning component 300. The range hood body, the smoke collection component 200, and the steam cleaning component 300 can adopt the structure of any one or more of the embodiments described above, and their beneficial effects are as shown in the corresponding embodiments, which will not be repeated here.

[0129] In one embodiment, the range hood body also has a second smoke collection port 112 connected to the second flue, and the first flue is connected to the second flue. Vertically, the height of the first smoke collection port 111 on the range hood body is lower than the height of the second smoke collection port 112. At least one guide channel is provided within the first flue, and the guide channel is offset from the nozzle 311. Wherein, after the range hood body is positioned on the corresponding stovetop, this vertical direction can be perpendicular to the ground. The first smoke collection port 111 is located near the bottom of the first flue, and its vertical installation height is lower than that of the second smoke collection port 112 of the second flue, making the first smoke collection port 111 closer to the stovetop surface, enabling close-range, low-diffusion smoke extraction. The second smoke collection port 112 is located above, which can assist in absorbing smoke diffused in a higher area, or can be considered a supplementary smoke extraction port to improve the overall smoke extraction range.

[0130] In one embodiment, such as Figure 6 , Figure 8 and Figure 9As shown, the main body of the smoke hood includes a top smoke collection hood 120, a panel 130, a side smoke collection hood 140, and a fan 150. The top smoke collection hood 120 has a first opening end and a smoke outlet that are arranged opposite to each other. The fan 150 is located on the top smoke collection hood 120 and communicates with the smoke outlet. The side smoke collection hood 140 has a second opening end and a third opening end that are opposite to each other. The second opening end of the side smoke collection hood 140 and the panel 130 are both connected to the first opening end of the top smoke collection hood 120. The panel 130, the top smoke collection hood 120, and the side smoke collection hood 140 enclose a second smoke collection port 112. The channel between the second smoke collection port 112 and the smoke outlet is a second smoke duct. The channel between the second opening end and the third opening end of the side smoke collection hood 140 is a first smoke duct, and the third opening end is a first smoke collection port 111.

[0131] The first opening of the top smoke hood 120 serves partly as the second smoke collection port 112 and the other part is connected to the side smoke hood 140 to connect the first flue and the second flue. The smoke outlet is connected to an external fan 150 to generate negative pressure airflow so that the flue gas can pass through the first smoke collection port 111 and the first flue to the second flue and be discharged; or the flue gas can pass directly from the second smoke collection port 112 to the second flue and be discharged.

[0132] Optionally, the side fume hood 140 has a cylindrical or cavity structure with a second and a third opening end. The second opening end is connected to the first opening end of the top fume hood 120, while the third opening end faces the stovetop, serving as a smoke inlet near the cooking area, i.e., the first smoke inlet 111. The internal channel of the side fume hood 140 forms a first flue, through which fumes enter from the third opening end and flow upwards. The panel 130 is connected to the first opening end of the top fume hood 120 and, together with the side fume hood 140, forms a second smoke inlet 112 located above. This second smoke inlet 112 communicates with the exhaust port of the fan 150 through the space inside the top fume hood 120, forming a second flue for absorbing fumes diffused from above the cookware. The second smoke inlet 112 can be a side opening or an annular opening; its specific shape and position are not limited here.

[0133] Optionally, the top smoke hood 120 may include a side panel, one end of which forms a smoke outlet, and the other end forms a first open end. A panel 130 is disposed at the first open end. The side panel, panel 130, and the corresponding outer side wall of the side smoke hood 140 form a second smoke collection port 112. Optionally, the side smoke hood 140, corresponding to the side of the panel 130, may be composed of a glass panel 130. Firstly, the glass panel 130 has high structural strength. Secondly, a baffle plate 320 needs to be installed on this side, which can simultaneously enhance the structural strength of the baffle plate 320. Thirdly, the glass panel 130 often faces the operating end, making it easier to clean when dirty.

[0134] In one embodiment, such as Figure 10 and Figure 12 As shown, the steam cleaning assembly 300 includes a steam generator 340 and a water storage device 350. The steam generator 340 has a first interface and a second interface. The first interface is connected to the water storage device 350 for receiving steam water from the water outlet device. The jet unit has an air inlet communicating with the nozzle 311, and the second interface is communicating with the air inlet of the jet unit.

[0135] The water storage device 350 stores cleaning water to continuously supply water to the steam generator 340. The steam generator 340 contains a heating element that rapidly heats the incoming water to above its boiling point, converting it into high-temperature, high-pressure steam. The generated steam is output through a second interface and connected to the air inlet of the jet unit via a high-temperature resistant pipe. Finally, it is directionally ejected from multiple nozzles 311 on the jet unit, acting on the surface of the back plate 220 of the smoke collection assembly 200. Thus, with the water storage device 350, a water source is provided for the automatic cleaning function of the range hood 10, enhancing its self-cleaning capability.

[0136] Optionally, the water storage device 350 may be equipped with a heating element to preheat the water source inside, so that the water entering the steam generator 340 does not need to be heated and evaporated from room temperature, thereby improving the evaporation efficiency and thus improving the cleaning efficiency.

[0137] In one embodiment, such as Figure 9 As shown, the range hood 10 also includes a water receiving part, which is located in the smoke collection assembly 200 away from the main body of the range hood.

[0138] It is important to note that cleaning wastewater containing oil will flow downwards along the surface of the back panel 220 under gravity. If not properly guided, it may drip onto the stove or cookware, causing secondary pollution. The water receiving section can collect the cleaning wastewater flowing from the end of the back panel 220, preventing overflow. Optionally, this water receiving section can be a groove or flanged structure with a certain volume and a guiding slope. This water receiving section can face one side of the back panel 220 so that condensed water after cleaning can flow along the back panel 220 to this receiving section. Finally, the collected wastewater can be directed to the side or rear drainage channel for unified discharge. This avoids water leakage and oil dripping during the cleaning process, ensuring a clean kitchen environment.

[0139] In this embodiment, as Figure 9As shown, the damper 210 includes a door body 211 and a water receiving plate 212. The water receiving plate 212 is located on the underside of the door body 211 and is detachably connected to the door body 211 via a connector, allowing it to move along with the door body 211. The water receiving plate 212 has a water trough facing the damper 210, and one side of the water receiving plate 212 has a flange structure corresponding to the edge of the door body 211, used to guide the wastewater from cleaning on the door body 211 and the back panel 220 into the water trough of the water receiving plate 212. When the water trough is full, the water receiving plate 212 can be removed to empty the water. The drive rod 233 of the drive assembly 230 is drivenly connected to the door body 211, and the door body 211 drives the water receiving plate 212 to move.

[0140] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no technical conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for controlling the cleaning of a range hood, characterized in that, The range hood includes a main body, a smoke collection assembly, and a steam cleaning assembly. The main body has a first flue and a first smoke collection port communicating with the first flue. The smoke collection assembly is movably disposed in the main body and can be switched to open or close the first smoke collection port. The steam cleaning assembly has a jet nozzle disposed in the first flue, and the jet nozzle has a nozzle facing the smoke collection assembly. The smoke collection assembly is movably disposed in the first flue between a first position and a second position. In the first position, the smoke collection assembly opens the first smoke collection port, and in the second position, the smoke collection assembly closes the first smoke collection port. The smoke collection assembly includes a damper and a back plate. The back plate is movably disposed in the first flue between a first position and a second position, and extends along the first flue. The damper is connected to the back plate. In the first position, the damper opens the first smoke collection port, and in the second position, the damper closes the first smoke collection port. The jet nozzle faces the back plate. The range hood cleaning control method includes: When a working command is triggered to perform cleaning on the smoke collection assembly, the steam cleaning assembly is controlled to evaporate the water and then output steam through the nozzle of the jet unit to clean the smoke collection assembly. Determine the activation timing of the smoke collection component and control its activity. The determination of when to activate the smoke collection component and the control of the smoke collection component's activity include: The activation timing of the smoke collection assembly is determined, and the back plate is controlled to move and switch between the first and second positions multiple times, so that the reciprocating motion of the back plate continuously changes its contact area with the steam flow, thus forming a dynamic scouring effect.

2. The range hood cleaning control method as described in claim 1, characterized in that, Determining the activation timing of the smoke collection component and controlling its activity includes: Obtain the temperature of the smoke collection assembly; When the temperature of the smoke collection component reaches the first preset temperature, the activation timing of the smoke collection component is determined, and the activity of the smoke collection component is controlled.

3. The range hood cleaning control method as described in claim 1, characterized in that, Determining the activation timing of the smoke collection component and controlling its activity includes: Start timing for heating up; Once the target heating time is reached, determine the activation timing of the smoke collection component and control its operation.

4. The range hood cleaning control method as described in claim 3, characterized in that, Before starting the heating time, the method further includes: Obtain the current initial temperature of the smoke collection assembly; Based on the acquired current initial temperature and a preset lookup table, the target heating time corresponding to the acquired current initial temperature is determined.

5. The range hood cleaning control method as described in claim 1, characterized in that, Before the steam cleaning assembly evaporates water and outputs steam through the nozzle of the jet unit to clean the smoke collection assembly after the working command for cleaning the smoke collection assembly is triggered, the method further includes: Upon receiving the cleaning start command and confirming that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered. The process of determining the activation timing of the smoke collection assembly and controlling the backplate to move and switch between the first and second positions multiple times includes: The activation timing of the smoke collection assembly is determined, and the back plate is controlled to move and switch between a first position and a second position multiple times. During the process of the back plate moving and switching from the second position to the first position for the first time after the current activation timing is reached, there are at least two movement phases, and the movement speed of the back plate in one movement phase is lower than the movement speed in the other movement phase.

6. The range hood cleaning control method as described in claim 1, characterized in that, Before the steam cleaning assembly evaporates water and outputs steam through the nozzle of the jet unit to clean the smoke collection assembly after the working command for cleaning the smoke collection assembly is triggered, the method further includes: Upon receiving the cleaning start command and confirming that the backplate is in the second position, a working command to perform cleaning on the smoke collection assembly is triggered. The process of determining the activation timing of the smoke collection assembly and controlling the backplate to move and switch between the first and second positions multiple times includes: The activation timing of the smoke collection assembly is determined, and the back plate is controlled to move and switch between the first and second positions multiple times. During the process of the back plate first moving from the second position to the first position after the current activation timing is reached, the back plate is controlled to move in a variable speed manner with a decreasing movement speed.

7. The range hood cleaning control method according to any one of claims 1 to 4, characterized in that, Before the steam cleaning assembly evaporates water and outputs steam through the jet unit to clean the smoke collection assembly after the steam cleaning assembly is activated by the working command, the process includes: Upon receiving a cleaning start command, determine the location of the smoke collection assembly; When the position of the smoke collection assembly is determined to be closed at the first smoke collection port, the operation command of the steam cleaning assembly is triggered.

8. A control device, characterized in that, The control device is configured to implement the range hood cleaning control method as described in any one of claims 1 to 7.

9. A range hood, characterized in that, The range hood includes the control device as described in claim 8.

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